4 ideas
17751 | Gödel proved the completeness of first order predicate logic in 1930 [Gödel, by Walicki] |
16597 | Quantity is the capacity to be divided [Digby] |
8113 | Art is like understanding a natural language, and needs a grasp of a symbol system [Goodman, by Gardner] |
16731 | Colours arise from the rarity, density and mixture of matter [Digby] |